The purpose of this experiment is to: (a) determine if hand soap or alcohol gel is the most effective in killing Staphylococcus aureus (b) obtain the statistical difference of effectiveness in killing S. aureus between hand soap and alcohol gel. The null hypothesis is that neither hand soap nor alcohol gel is effective in killing S. aureus more than the control group which is nothing at all. The alternate hypothesis is that hand soap versus the control group will be more effective in killing S. aureus and/or alcohol gel versus the control group will be more effective in killing S. aureus. Another alternate hypothesis is that alcohol gel is more effective in killing S. aureus than the hand soap. Materials and Methods:

The bottom of a Trypticase Soy Agar (TSA) plate is divided into three (3) pie sections along with the experimentalist initials, class day and class time. A sample of S. aureus is obtained in a closed lid sample tube. The sample tube is rolled back and forth to suspend the organism evenly while wearing gloves. The sterile swab is dipped into the test tube to obtain S. aureus, and then closed. The petri dish lid is opened just long enough to gently apply the swab in a streak pattern rotating the plate at different angles. The lid is placed on the petri dish and the contaminated swab is disposed in the biohazard bag. A blank disk is placed in the center of section one (1) with sterile tweezers. A second disk is dipped into hand soap and placed in the center of section two (2). A third disk is dipped into alcohol gel and placed in the center of section three (3). Each disk is softly tapped into media to secure. The petri dish is placed bottom side up in an incubator set at 37 degrees Celsius for three (3) days and then placed into refrigerator. Two (2) weeks later the diameter of the zone of clearing around the disk from each section is measured in millimeters. The data is collected from each class...

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* More research findings attached for your perusal as Appendix 1.
3. How to find the...

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A personalised induction will always be more effective
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07/12/14
Block C
Early World History
Which city­state has the mosteffective government?
The mosteffective government in ancient Greece is definitely Athenians’ democracy,
because it followed the people’s will. Although Sparta was very strict and self­discipline,
it was too extreme. For example, Helots were the lowest class of Sparta. Spartans
treated them brutally and oppressively because Helots were outnumbered by the
Spartans, and the​
​
Spartans were afraid that they would fight against them. But history
proved that ruling as a tyrant could not prevent an uprising. In about 371 B.C., the
Messenian Helots who had been enslaved by the Spartans for several centuries
uprised. This​
​
led to the Spartans decline, because the Helots were the foundation of​
​
the
Spartan​
s​
society​
;​
they were farmers, nurses, and cooks. The Spartans could​
​
not live
without them. However, because of the Spartans fear of Helots, they couldn’t send
troops to far away places. In this time, Athens formed a Delian League, an alliance of
city­states with Athens as leader. Athens were democratic, but the Delian League was
not and Athens made all the decisions. As the historian Thucydides said, people will
never obey tyranny, because their leadership depends on their superior strength, not
the goodwill of people. Spartan's government was tyrannical, and was effective for a ...